[TimJFowler]

Originally Posted by gasstingy

We broke for lunch and to take a break from the 99 degree weather. About 3:30 pm, I took an IR thermometer and did the totally unscientific roof and scaffold temperature test that I promised I’d do. I used a ruler to make sure I took my reading from 12” above the surface in all cases because there is a slight variance for distance.

This is what I measured {all in degrees f}:
* For the bare steel scaffold that I said was painfully hot a week earlier, it was 121.6,
* the garage silver galvalume roof was 102.1,
* our blue galvalume roof {with 7 years of filth accumulated} 121.7,
* a mobile home roof {with a silver colored coating} 143.6,
* and finally a brown shingle roof was 144.3.

All my measurements were finished at 4:15 pm.

Thanks for the interesting data points gasstingy. I know that these readings don't add up to a scientific study, but they seem similar to the cool roof materials info that I've seen.

Keep the reports coming, I am starting to have some serious garage envy.

Tim